I think it is B. He tries to look the part.
Answer:
I'm not sure which one but this may help
Academic discourse uses words and sentence structures that help a writer talk about complicated topics.
Explanation:
Hospitals take strict precautions to assure that nothing adulterates the blood supply.
** adulterate : render something poorer in quality by adding another substance, typically an inferior one.
Answer: I believe it’s A.
Explanation: it explains difficulties that astronauts may face and in the following sentence it goes more in depth
Answer:
C.
Most can be approached by determining whether an idea or fact is accurate.
Explanation:
Edge 2020